/**分析程序是否错误，如果错误，说明错误原因。如果正确，写出输出结果*/
public class Test4 {
    public static void main(String[] args){
        Audi a = new Audi();
        Car c = new Car();
    }
}
class Car{
    public Car(){
        System.out.println("car");
    }
}
//奥迪类
class Audi extends Car{
    public Audi(){
        System.out.println("audi");
    }
}


